01577+4434 A 1526 (HD 11869)
01h 57m 40.62s +44° 33' 48.0" P.A. 186.00 sep 0.2 mag 8.70,8.80 Sp A0 dist. 220.26 pc (718.49 l.y.)
Coord 2000 |
01577+4434 |
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Discov num |
A 1526 |
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Comp |
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Coord arcsec 2000 |
01 57 40.62 +44 33 48.0 |
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Date first |
1907 |
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Date last |
2013 |
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Obs |
23 |
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Pa first |
291 |
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Pa last |
186 |
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P.A. Now (θ) |
186° |
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Sep first |
0.4 |
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Sep last |
0.18 |
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Sep. Now (ρ) |
0.18" |
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Mag pri |
8.70 |
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Mag sec |
8.80 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
A0 (white) |
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Pri motion ra |
+004 |
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Sec motion ra |
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Pri motion dec |
-007 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 11869 |
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Constellation |
Andromeda |
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SAO |
37641 |
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HIP |
9128 |
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Tycho2 |
2828-01723-1 |
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Gaia DR2 |
349741145419301888 |
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HD |
11869 |
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ADS |
1554 |
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BD |
BD+43 401 |
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Distance |
220.26 |
|
Distance ly |
718.49 |
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ORBITAL ELEMENTS
Period (P) | 877.5y | ± 53.7 |
Periastron (T) | 1919.6y | ± 55.4 |
Semi-major axis (a) | 0.648a | ± 0.06 |
Eccentricity (e) | 0.449 | ± 0.041 |
Inclination (i) | 100.2° | ± 2 |
Longitude of periastron (ω) | 187.4° | ± 3.2 |
Node (Ω) | 112.6° | ± 1.3 |
Notes | | |
Reference | Cve2010e | |
Equinox | 2000 | |
Last observation | 1995 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
223.2 |
0.090 |
2001 |
219.7 |
0.088 |
2002 |
216.2 |
0.087 |
2003 |
212.6 |
0.087 |
2004 |
209.0 |
0.086 |
2005 |
205.3 |
0.086 |
2006 |
201.7 |
0.087 |
2007 |
198.1 |
0.087 |
2008 |
194.6 |
0.088 |
2009 |
191.1 |
0.090 |
2010 |
187.8 |
0.091 |
2011 |
184.6 |
0.093 |
2012 |
181.5 |
0.095 |
2013 |
178.6 |
0.098 |
2014 |
175.8 |
0.100 |
2015 |
173.2 |
0.103 |
2016 |
170.7 |
0.106 |
2017 |
168.4 |
0.110 |
2018 |
166.2 |
0.113 |
2019 |
164.1 |
0.117 |
2020 |
162.1 |
0.120 |
2021 |
160.3 |
0.124 |
2022 |
158.6 |
0.128 |
2023 |
157.0 |
0.132 |
2024 |
155.5 |
0.136 |
2025 |
154.0 |
0.140 |
2026 |
152.7 |
0.144 |
2027 |
151.4 |
0.149 |
2028 |
150.2 |
0.153 |
2029 |
149.1 |
0.157 |
2030 |
148.0 |
0.162 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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